摘要
A very unique paramagnetic defect has been detected by electron paramagnetic resonance (EPR) in -ray irradiated IrO2 single crystals. The unpaired electrons of the defect species were observed to interact with a single Ir nucleus, and the magnetic symmetry is axial. The g? and the g values are very close to those known for Ir2+(5d7) in the low-spin state, but the Fermi contact contribution to the hyperfine splitting is much larger than usual. Moreover, the defect species was found to be preferentially oriented along the a axis (or the b axis, but not both) of the tetragonal rutile lattice. An [Ir-O]0 molecular defect is proposed to account for its EPR properties.
原文 | 英語 |
---|---|
頁(從 - 到) | 4281-4288 |
頁數 | 8 |
期刊 | Physical Review B |
卷 | 40 |
發行號 | 7 |
DOIs | |
出版狀態 | 已發佈 - 1989 |
ASJC Scopus subject areas
- 凝聚態物理學